186
Flow and Pressure Diagram, CSR, Full Cool
1. Scroll Compressor
Compressor operation has a delay on initial start-up and when the unit shifts to a
cooling mode requiring the compressor to start.
4. High Pressure Cutout Switch (HPCO)
Is a normally closed switch.
It opens at 3240 ± 50 kPa, 32.4 ± 0.5 bar, 470 ± 7 psig.
It closes at 2590 ± 260 kPa, 25.9 ± 2.6 bar, 375 ± 38 psig.
5. Compressor Discharge (Head) Temperature Sensor
Controller cycles condenser fan on typically when the compressor discharge
temperature is above 50 C (122 F) and increasing.
10. High Pressure Relief Valve
Opens: -3450 +520/-105 kPa, 34.5 +5.20/-1.05 bar, 500 +75/-15 psig.
Closes: 2760 kPa, 27.6 bar, 400 psig.
19. Low Pressure Cutout Switch (LPCO)
Is a Normally open switch.
Opens: -17 to -37 kPa, -0.17 to -.037 bar, 5 to 11 in. Hg vacuum.
(Before 1/2001: +21 to -20 kPa, +0.21 to -0.20 bar, 3 psig to 6” Hg vacuum).
Closes: 28 to 48 kPa, 0.28 to 48 bar, 4 to 7 psig.
(Before 1/2001:) 48 to -90 kPa, 0.48 to 0.90 bar, 7 to 13 psig
22. Electric Heaters
During the Defrost and Heat mode, the electric heaters are pulsed on and off.
26. Condenser Coil Temperature Sensor
Controller cycles condenser fan on typically when the condenser coil temperature is
above 35 C (95 F).
28. Controller
MP-3000 with digital thermostat, thermometer and fault indicator monitor.
High Pressure Gas
High Pressure Liquid
Low Pressure Gas
Low Pressure Liquid
Condensing High Pressure Gas
Low Pressure Vaporizing Liquid
Liquid Refrigerant Injection
AXA0262
AXA0265
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